Research skills (midterm)

Values measured in groups or categories, such as gender, favorite color, or type of car, are known as:

Which type of study assesses whether one or more treatments are superior to others?

In which type of study researcher interfere to investigate which factors may be responsible for increase or decrease prb

Which type of study assesses the efficacy of a treatment intervention in a controlled, standardized, and highly monitore

__________ are collected from a subset of a large population.

What is a definition of the standard error?

The mean is:

Which of the following is true? A P value of 0.05 means that:

A market researcher polls every tenth person who walks into a store. What type of sampling is used?

If a researcher sets a level of significance at p < 0.05 (i.e., 5%), what does this mean?

___________ refers to numbers or nonnumerical labels (male/female) collected from a set of entities (people, cities, etc

Case‐control studies are always

In which type of study does the investigator use information already collected to look for associations?

Which statement is true regarding a measure of central location

Color is an example of which type of data?

_____is a sampling method where the population is divided into clusters or groups, and a random selection of clusters is

A computer generates 100 random numbers, and 100 people whose names correspond with the numbers on the list are chosen

Which method of data collection is used if you collect data for a study about the effects of a certain drug given to 10

Which type of study compares those who have had an outcome or event with those who have not?

Mrs. Bauer wanted to investigate whether the amount of time students studied for the test would affect their grade on th

What percentage of values lie within ±1.96 standard deviations of the mean?

refers to the relationship between cause and effect, where one event or variable (the cause) leads to a change in anothe

Which statement is false about correlation?

Bar graphs Bars may be vertical or horizontal, but should touch All must be equal width

Which of the question isn’t true for descriptive epidemiologic studies?

is a sampling method where the population is divided into distinct subgroups or strata based on certain characteristics

Which of the following is true for the statement: "95% confidence interval for the mean"?

What are the distinguishing features of simple random sampling?

Which of the following options isn't true? Frequency measures used to summarize categorical variables are:

A traffic cop was stopping every 5th car to check for insurance and license. What type of sampling method is the cop usi

A survey will be given to 100 students randomly selected from the freshmen class at Lincoln High School. What is the pop

What is the name of the variable which is usually measured or tested in an experiment?

A researcher is interested in the travel time of Georgian University students to college. A group of 50 students is inte

Which of the following isn't a measure of central tendency?

Can be anything within a given range Key: amount of •e.g: –Height/weight –GPA –square footage of building –distance

Which of the following statements is true about a proportion?

Which of the following assumptions are required if an independent t-test is to be used?

In which type of study does the investigator identify a group of individuals and then observe them for a specified perio

A statistic is a value calculated from:

Normally distributed data are normally referred to as:

The standard error of a data set will always be:

Animals, plants, and inanimate subjects are called:

_________ are observations (such as measurements, genders, survey responses) that have been collected.

The first 40 people who walk into a sporting event are polled on their television preferences. What type of sampling is

A sports psychologist was interested in the effects of a six-week imagery intervention on an athlete’s ability to execut

Qualitative and quantitative research methods are never used together in a study

Which statement is true about the Pearson Correlation Coefficient (r)?

Which of the following statements is TRUE about the standard deviation (SD)?

Which of the following is true?

The data that categories patients as males or females are known as:

Tell if the statement is descriptive or inferential: A recent survey of 2,000 adults having an MBA reported that the ave

For presenting the relationship between two variables, which of the following would be most suitable?

You can actually count the possible responses: Key: e.g: –number of children – number of students – number of pages

The definition of epidemiology, "determinants" generally includes:

The focus of epidemiologic studies is on:

There is no necessary relationship between the categories. (ie: no natural ordering) •Names, numbers, or other symbols u

Which of the following data represents interval continuous data?

What is NOT an objective of epidemiology? (Choose one best answer)

Please choose the correct answer. Epidemiological study:

A designed experiment is a test or series of tests in which ____________ changes are made to the input variables so that

Which of the following is false about sampling problems?

Which statement isn’t true? Linear regression

What effect would increasing the sample size have on a confidence interval?

For presentation comparison of one category with others, which of the following be most suitable?

Which one among the following statements is true in the context of the testing of hypotheses?

Which of the question is true for analytical (inferential) epidemiologic studies?

A researcher is curious about the IQ of students at Georgian University. The entire group of students is an example of a

Epidemiological methods try to

Which of the following statements is true?

_________ are characteristics recorded about each individual. The _______ should have a name that identifies what has be

_________ is a collection of procedures and principles for gathering data and analyzing information to help people make

______ is a statistical measure that quantifies the degree of association or relationship between two or more variables.

Which of the following isn't true? Measures of spread that describe the dispersion or variation of values from the peak

_________ refers to the tools of drawing out conclusions, descriptions, inferences, and generalizations from the analyze

_____ is a statistical technique used to model and analyze the relationship between a dependent variable (or target) and

The Framingham Study, in which a group of residents have been followed since the 1950s to identify the occurrence and ri

Which statement isn't true about a correlation study?

Epidemiology study tries to answer

The scores of exams for 10 students are: 75, 82, 90, 92, 67, 95, 110, 80, 82, 86. Find the mode for the above data.

Which measure of central tendency is affected by extreme values?

___________ is one in which participants are merely observed and measured.

Pain assessment scale is an example of which type of data?

Which type of study can be used to describe the experience of an individual or institution in treating a disease?

Sampling is the process of selecting a subset of individuals, items, or data points from a larger population or dataset

In order for accurate measures of the linear relationship between two variables to be achieved, what type of data are re

In which type of study are neither the researcher nor the participants aware of the group to which the participants are

Which type of study follows up a similar group of individuals who are initially free of the outcome of interest, but for

The median of a numerical list of data is the value ____________

Individuals who answer a survey are called:

What is the name of the variable that isn't influenced or changed by the other variables in an experiment?

Criteria for judging the evidence of causality include:

Statistics is

Which of the following statements isn’t true about a ratio?

Values measured in numeric values with meaning (units/counts), such as the number of minutes, weight (in pounds), or sno

Which of the following statements is the most accurate description for the concept of standard deviation?

Correlation is measured by using a correlation coefficient - r (Pearson Correlation Coefficient), which varies from −1

The scale of Celsius temperature is an example of __________ data

You have to present a frequency distribution data on diastolic blood pressure in hypertensive patients. Which of the fol

If categorical variable is ordinal in nature the display should decrease in logical order or increase in logical order